Stochastic resonance is a phenomenon where the addition of noise to a system can enhance the detection or transmission of weak signals. This concept was first introduced in the field of neuroscience to explain how weak sensory signals can be boosted by the presence of noise in the nervous system. Stochastic resonance has since been studied in various fields including physics, engineering, and biology, and has applications in signal processing, communication systems, and sensor technology. The idea is that a certain amount of noise can help to improve the detection and processing of signals, rather than hinder it. Researchers continue to study stochastic resonance to better understand its mechanisms and potential applications.